use non-dagger weapons or werewolf (not a must have, but sometimes nice)
- if you have problems by killing opponents with a non-stealth fight (like pulling dragons with bow), get some axes, blades or maces with high damage
- or get werewolf to give there evil punches in the face
- daggers doesn't do a lot of damage in no-stealth but there are "fine", too

disadvantages
- there is no perfect dragon mask for this build
- you often need to pull dragons with a bow, so you start without insane sneak-attack (but dragons are easy)
- no finishing animation while using the dual wield power-attack
- starting a fight without sneak attack doesn't do that damage (take some axes or what ever to have a nice no-stealth-damage)

If you go to the fortune teller in whiterun she gives you a quest to go get a better set of DB armor. The hood is the only piece i use from it. +35% Bow dmg. There is one mask that gives +20% archer lockpicking and alchemy. but i prefer the hood.